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化学“101计划”合成化学实验课程建设——仿生超疏水功能材料的合成与性能

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大学化学 2024年第10期39卷 101-106页

作者：于存明田东亮陈静杨青林刘克松江雷北京航空航天大学化学学院北京102206 中国科学技术大学苏州高等研究院江苏苏州215123

仿生超疏水功能材料属于新兴的跨学科交叉研究领域,涉及化学、材料科学、物理学等多个学科的原理和技术,在自清洁、防腐蚀、防污减阻等领域展现出独特的应用潜力。该研究领域发展迅速,但传统实验教材内容相对滞后,不能及时反映该领域最... 详细信息

仿生超疏水功能材料属于新兴的跨学科交叉研究领域,涉及化学、材料科学、物理学等多个学科的原理和技术,在自清洁、防腐蚀、防污减阻等领域展现出独特的应用潜力。该研究领域发展迅速,但传统实验教材内容相对滞后,不能及时反映该领域最新的科学进展和理论。本实验课程依托教育部化学“101计划”合成化学实验课程,以仿生超疏水功能材料的合成与性能研究教学实验为例,介绍仿生超疏水功能材料前沿研究,凝练适合拔尖创新人才培养的实验课程,为该领域的教学实践提供理论和实证支持,提升基础学科人才培养质量。

关键词：化学“101计划” 合成化学实验仿生超疏水功能材料

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极限近距侧穿桩基盾构隧道开挖过程扰动效应

隧道与地下工程灾害防治 2020年第1期2卷 61-67页

作者：刘涛杨克形姜磊黄旭峰高瑞刘世奇中铁七局集团第三工程有限公司陕西西安710043 浙江工业大学建筑工程学院浙江杭州310012

杭州地铁3号线盾构隧道超近距离侧穿高架桥桩基盾构掘进过程中,存在桩基偏位、桥梁结构变形过大等安全隐患,采用土体移动模型的理论计算法和Midas GTS软件模拟盾构隧道施工过程,对盾构推进过程中上覆地层沉降、超近距离桩基偏移倾斜变... 详细信息

杭州地铁3号线盾构隧道超近距离侧穿高架桥桩基盾构掘进过程中,存在桩基偏位、桥梁结构变形过大等安全隐患,采用土体移动模型的理论计算法和Midas GTS软件模拟盾构隧道施工过程,对盾构推进过程中上覆地层沉降、超近距离桩基偏移倾斜变化规律进行计算分析。研究表明,左线或右线隧道单独开挖,隧道拱顶及以上地表产生最大沉降,并向两侧依次递减,沉降的理论计算值与数值模拟结果相近;双线隧道开挖完成后最大沉降发生在两隧道之间以上地表位置;左右线隧道的先后开挖引起中间排桩基左右摆动偏移;刀盘推进参数和掌子面距桩基的距离是影响桩基偏位的主要因素;盾壳围岩间隙、管片后二次注浆材料强度等对地层变形产生一定程度的影响,并间接对桩基的倾斜度产生影响。

关键词：盾构超近距离地层沉降桩基变位仿真分析

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薄壁断裂峪河口至方庄段电性结构特征

物探与化探 2020年第6期44卷 1301-1305页

作者：杨利普徐志萍徐顺强刘明军姜磊熊伟贺为民中国地震局地球物理勘探中心河南郑州450002

为研究薄壁断裂南段的电性结构特征,采用高密度电阻率层析成像探测方法,对薄壁断裂在峪河口以南至方庄镇段的电性结构进行探测,共布设4条测线,总长度为10.47 km,探测结果揭示在测线下方存在有明显的电阻率间断面,认为是薄壁断裂在该处... 详细信息

为研究薄壁断裂南段的电性结构特征,采用高密度电阻率层析成像探测方法,对薄壁断裂在峪河口以南至方庄镇段的电性结构进行探测,共布设4条测线,总长度为10.47 km,探测结果揭示在测线下方存在有明显的电阻率间断面,认为是薄壁断裂在该处的反映。结合已有地质地球物理结果,认为薄壁断裂具有明显的分段特征,以峪河口为界,以北至上八里镇石门河出山口处,在第四纪早期有明显活动,以南至方庄镇附近为隐伏断裂,走向NE,倾向SE,倾角约为60°,上断点深度为30 m。

关键词：高密度电阻率法层析成像薄壁断裂电性结构隐伏断裂

Optimal Power Allocation for Parallel Grid-Connected Inverters Based on Lagrangian Function Method

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Chinese Journal of Electrical Engineering 2017年第3期3卷 68-76页

作者： Weidong jiang Peixia Wang Jinping Wang lei Wang School of Electrical Engineering and Automation Hefei University of TechnologyHefei230009China Department of Information Engineering Hefei University of Technology Xuancheng CampusXuancheng242099China

Two parallel grid-connected inverters can increase system capacitance *** order to exert maximum efficiency of parallel grid-connected inverters,an optimal power allocation(OPA)method is ***,the power model of every inverter is *** with the equal power allocation(EPA)method,theoretically,higher overall system efficiency can be achieved with the OPA ***,the overall system efficiency can be calculated with easily measurable electric parameters,and the online optimization realized by adopting an existing method,such as the hill-climbing ***,the feasibility of the OPA method is verified by simulation and experimentation.

关键词： Power allocation efficiency optimization parallel inverters

Facile one-step synthesis of PdPb nanochains for high-performance electrocatalytic ethanol oxidation

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Rare Metals 2020年第7期39卷 792-799页

作者： Yong Zhang Xiao-lei Yuan Feng-lei Lyu Xu-Chun Wang Xiao-Jing jiang Mu-Han Cao Qiao Zhang Institute of Functional Nano and Soft Materials FUNSOM Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123China School of Chemistry and Chemical Engineering Nantong UniversityNantong 226019China

The widespread application of direct ethanol fuel cells is hampered due to the low activity,high cost and poor operation durability of electrocatalysts for ethanol oxidation reaction(EOR).Herein,we report a one-pot synthetic method to synthesize PdPb3 nanochains with well-defined shape,size and composition via a solution-phase reduction *** morphology,composition distribution and structure characteristics of PdPb3 nanochains were investigated by transmission electron microscopy,X-ray photoelectron spectroscopy and X-ray *** to the unique structure,the as-obtained PdPb3 nanochains can manifest much higher mass activity(2523 mA·mg-1)and higher operation durability than commercial Pd/C(1272 mA·mg-1)during the EOR *** importantly,further CO-stripping measurements indicate that the incorporation of Pb species could favor the oxidative removal of CO intermediates on the Pd electrode at the negative potential and enhance the EOR activity and stability,making it possible to develop highly active and durable electrocatalysts.

关键词： PdPb Nanochains Ethanol oxidation reaction CO stripping Electrocatalysts

Effects of Wetland Vegetation on Soil Microbial Composition:A Case Study in Tumen River Basin,Northeast China

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Chinese Geographical Science 2017年第2期27卷 239-247页

作者： QIN lei jiang Ming TIAN Wei ZHANG Jian ZHU Weihong Northeast Institute of Geography and Agroecology Chinese Academy of SciencesChangchun 130102China Geography Department of Sciences Yanbian UniversityYanji 133002China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Natural Resources of Changbai Mountain&Functional Molecules Yanji 133002China State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration Northeast Normal UniversityChangchun 130117China

Hydrology plays a dominant role in wetland plant distribution and microbial composition, but few studies explicitly attempted to relate the linkage between wetland vegetation and microbial community. The present study consisted of five wetland plant communities along three adjacent flood gradients zones(zone 1 dominated by Carex appendiculat, zone 2 dominated by Eleocharis ovate, and zone 3 dominated by Phragmites australis/Bidens pilosa/Calamagrostis angustifolia, which formed separate, monoculture patches). Gram negative and arbuscular mycorrhizal fungal phospholipid fatty acid(PLFA) are more abundant in the site with short flooding period(zone 3) than in the site with long flooding period(zone 1), and they are also different in the P. australis, B. spilosa and C. angustifolia of zone 3. Principle Component Analysis(PCA) showed that the flooding period could explain 92.4% of variance in microbial composition. Redundancy Analysis(RDA) showed that available nitrogen(AN), total nitrogen(TN) and soil organic matter(SOM) could explain the 79.5% of variance in microbial composition among E. ovata, P. australis, B. pilosa and C. angustifolia. Results demonstrated that flooding period was the main factor in driving the microbial composition and plant-derived resources could influence soil microbial composition in the seasonally flooded zones.

关键词： plant soil feedback redundancy analysis phospholipid fatty acid (PLFA) soil property flooding period

A Combination of N2 and CO2 Adsorption to Characterize Nanopore Structure of Organic-Rich Lower Silurian Shale in the Upper Yangtze Platform, South China： Implications for Shale Gas Sorption Capacity

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Acta Geologica Sinica(English Edition) 2017年第4期91卷 1380-1394页

作者： CHEN lei jiang Zhenxue LIU Keyu GAO Fenglin WANG Pengfei State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum Beijing 102249 China Unconventional Natural Gas Institute China University of Petroleum Beijing 102249 China Unconventional Oil & Gas Cooperative Innovation Center China University of Petroleum Beijing 102249 China CSIRO Earth Science and Resource Engineering Bentley WA 6102 Australia School of Geosciences China University of Petroleum Qingdao 266580 Shandong China

The pores in shales are mainly of nanometer-scale, and their pore size distribution is very important for the preservation and exploitation of shale gas. This study focused on the organic-rich Lower Silurian black shale from four wells in the Upper Yangtze Platform, and their TOC, mineralogical composition and pore characterization were investigated. Low pressure N2 and CO2 adsorption were conducted at 77.35 K and 273.15 K, respectively, and the pore structures were characterized by modified Brunauer-Emmett-Teller （BET）, Dubinin-Radushkevich （DR）, t-plot, Barrett- Joyner-Halenda （BJH） and density functional theory （DFT） methods and then the relationship between pore structure and shale gas sorption capacity was discussed. The results indicate that （1） The Lower Silurian shale has high TOC content of 0.92%~96%, high quartz content of 30.6%-69.5%, and high clays content of 24.1%-51.2%. The total specific surface area varies from 7.56 m^2/g to 25.86 m^2/g. Both the total specific surface area and quartz content are positively associated with the TOC content. （2） Shale samples with higher TOC content have more micropores, which results in more complex nanopore structure. Micropore volumes/surface areas and non-micropore surface areas all increase with the increasing TOC content. （3） A combination of N2 and CO2 adsorption provides the most suitable detection range （~0.3-60 nm） and has high reliability and accuracy for nanopore structure characterization. （4） The TOC content is the key factor to control the gas sorption capacity of the Lower Silurian shale in the Upper Yangtze Platform.

关键词： shale gas nanopore structure Lower Silurian shale Upper Yangtze Platform sorption capacity

GSTP1 Ile105Val（A/G）多态性与进展期胃癌铂类药物化疗敏感性的Meta分析

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国际肿瘤学杂志 2014年第4期41卷 309-314页

作者：邓成辉关泉林姜雷李小奇甘亮亮魏孔孔兰州大学第一临床医学院 730000 兰州大学第一医院肿瘤外科

目的定量评价进展期胃癌患者中谷胱甘肽S转移酶pi（GSTP1）基因105氨基酸位点Ile/Val多态性与铂类药物化疗敏感性的关系.方法检索中国期刊全文数据库（CNKI）、中文科技期刊全文数据库（VIP）、中国生物医学文献数据库（CBM）、万方... 详细信息

目的定量评价进展期胃癌患者中谷胱甘肽S转移酶pi（GSTP1）基因105氨基酸位点Ile/Val多态性与铂类药物化疗敏感性的关系.方法检索中国期刊全文数据库（CNKI）、中文科技期刊全文数据库（VIP）、中国生物医学文献数据库（CBM）、万方数据库、PubMed、EMBASE、Cochrane Library,收集国内外公开发表的关于GSTP1 Ilel05Val基因多态性与胃癌铂类药物化疗敏感性关系的文献.临床有效（完全缓解＋部分缓解）作为评价化疗敏感性的指标.运用RevMan 5.2进行Meta分析,计算合并比值比（OR）及95％可信区间（CI）,运用Stata 12.0识别是否存在发表偏倚.结果本研究纳入6项研究共计病例724例,Meta分析结果显示,各基因型间（GG＋GAvs AA：OR=2.38,95％ CI为1.29～4.38;GG vs GA＋ AA：OR=3.66,95％ CI为1.18 ～ 11.39;GG vs AA：OR=4.42,95％ CI为1.28～15.26）以及亚洲人群亚组（GG＋ GA vs AA：OR=2.93,95％CI为1.33 ～ 6.48）中GSTP1 Ilel05Val多态性与化疗敏感性的差异有统计学意义.结论 GSTP1 Ile105VaI（A/G）基因多态性可能与进展期胃癌铂类化疗药物敏感性相关.

关键词：胃肿瘤药物疗法多态性,单核苷酸 Meta分析谷胱甘肽S转移酶pi

Parallelization of motion compensation algorithm based on reconfigurable video array processor

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The Journal of China Universities of Posts and Telecommunications 2019年第6期26卷 83-93页

作者： Xie Xiaoyan lei Xiang Zhou Jinna Zhu Yun jiang Lin School of Computer Xi'an University of Posts and TelecommunicationsXi'an 710121China School of Electronic Engineering Xi'an University of Posts and TelecommunicationsXi'an 710121China Integrated Circuit Design Laboratory Xi'an University of Science and TechnologyXi'an 710054China

The new encoding tools of high efficiency video coding(HEVC) make the interpolation operation more complex in motion compensation(MC) for better video compression, but impose higher requirements on the computational efficiency and control logic of the hardware architecture. The reconfigurable array processor can take into consideration both the computational efficiency and flexible switching of algorithms very well. Through mining the data dependency and parallelism among interpolation operation, this paper presents a parallelization method based on the dynamic reconfigurable array processor proposed by the project team. The number of pixels loaded from the external memory is reduced significantly, by multiplexing the common data in the previous reference block and the current reference block. Flexible switching of variable block operation is realized by using dynamic reconfiguration mechanism. A 16×16 processor element(PE)’s array is used to dynamically process a 4×4-64×64 block size. The experimental results show that, the reference block update speed is increased by 39.9%. In the case of an array size of 16 PEs, the number of pixels processed in parallel reaches 16.

关键词： HEVC MC parallelization reconfigurable